Telephone-exchange equipment



June 10, '1930. D. c. MEYER TELEiI IONE EX CHANGE EQUIPMENT Filed May13, 1927 //y VEN TOR 0151/55/17 61 MEYER ,4 TTORNEY Patented June 10,;1930 UNITED, STATES PATENT OFFICE DELIBERT C. MEYER, OF EAST ORANGE, NEWJ'ERSEY, ASSIGNOR TO BELL TELEPHONE LABORATORIES, INCORPORATED, OF NEWYORK, N. Y., A CORPORATION NEW YORK TELEPHONE-EXCHANGE EQUIPMENTApplication filed May 13, 1927. Serial No. 191,002.

This invention relates to telephone eX- change equipment and moreparticularly to improvements in distributing frames.

The term distributing frame is well known in the art of telephony and isapplied to that part of central office equipment which is employed as ameans for uniting incoming line wires with Wires or conductors leadingto the switchboard apparatus.

As is clearly shown in Figs. 2 and 3 of Patent No. 816,847 to F. B.Cook, April 3,

V 1906,a distributing frame consists primarily rated. According to usualpractice, holes are I of coordinately disposed supporting. members, atthe intersections of which are placed jumper rings, which provide anefficient means for supporting wires which interconnect terminals, thepositions of which, on the distributing frame, may be widely sepadrilled in the various supporting members to provide means forpositioning the jumper rings and clamping them in posit-ion on the frameby means of nuts and bolts. 7

It is the object of this invention to provide an improved means forsecuring jumper rings to distributing frames. This object isaccomplished by the provision of a distributing 1 or jumper ring havinga hooked portion adapted to engage a flangeon a distributing framemember, and a clamping member having a hooked portion adapted to engageanotherflange of the same member and coact with said ring to'securelyhold'the ring position.

Referring to the drawings, Fig. 1 is a perspective view, partly insection, of a portion of a horizontal supporting'member of adistributing frame, with a' distributing rlng mounted thereon.

Fig. 2 is a similar perspective view of a modified form .of'the'invention in which the distributing ring'is mounted at a differ-v entangle relative to the supporting member.

Fig. '3 is an BlGVatlOIHLl VIBW of a portion of a distributing framewith the distributing or supporting member 4, and a spring clamp 5 withits hooked ends engaging the other flange of bar 4 and its body engagingring 2,

in such a manner as to securely clamp it. in position on the channelbar. The portion of a distributing frame as shown in Fig. 3 con sists ofthe channel bars 4 secured to and coordinately disposed with respect toa vertical supporting member 6. The clamping spring 5 is provided withaninverted hump'or bulge 8 which engages a bend in the ring'member asshown, whichprevents slipping of the clamping member and provides atension which permits :thering to be more easily placed on the frame andmore firmly secured thereto.

This arrangement permits a quicker assembly of the distributing framesin that fewer operations are required to attach a also obviates thenecessity of drilling holes in the framework and the'consequent weakening thereof. With this arrangement a j umperrlng may be removed or itsposition changed on the supporting member with very little difiiculty. IWhat is claimed is:

. .In a mechanical device for mounting on a support, said support andsaid spring clamp coacting to efiect a resilient fastening means forsecuring the "device to the flanged member. l a

In witness whereof I hereunto subscribe 7 my name this 12th day of May,A. D. 1927.

DELBERT C. MEYER.v A

rings in position on the horizontal frame members. a I

In detail, the drawings show a distrlbuting ring 2 with its hookedportion 3 in engagement with a flange of the channel bar loo.

jumper ring to the supporting members, and 7 V

